Sen. Scott Brown--the Massachusetts Republican who won the seat held by the late Sen. Ted Kennedy--and a hero to Republicans in Democratic blue states--headlines a get-out-the-vote rally Sunday for Illinois Senate candidate Mark Kirk. The event is 6 p.m. at Joe's Bar, 940 W. Weed St. in Chicago. There will be multiple GOP GOTV rallies around the state on Sunday. Sen. John Thune (R-S.D.) is the draw at a Kirk upcoming fund-raiser.